Papers submitted in refereed journals

Publications/papers in press in refereed journals

GeV emission from Gamma Ray Bursts: a radiative fireball?
Ghisellini G., Ghirlanda G., Nava L., Celotti A.
2009, MNRAS, in press arXiv:0910.2459

Testing a new view of Gamma Ray Burst Afterglows
Nardini M., Ghisellini G., Ghirlanda G., Celotti A.
2009, MNRAS, in press arXiv:0907.4157

An optical spectroscopic survey of the 3CR sample. II. Spectroscopic classes and accretion modes in radio-loud AGN
Buttiglione S., Capetti A., Celotti A., D. Axon, M. Chiaberge, F. Macchetto, W. Sparks
2009, A&A, in press arXiv:0911.0536

Multiwavelength monitoring of the enigmatic Narrow-Line Seyfert 1 PMN J0948+0022 in March-July 2009
Abdo A.A., Ackermann M., Ajello M., et al. - Fermi-LAT Collaboration
2009, ApJ, 707, 727

General physical properties of bright Fermi blazars
Ghisellini G., Tavecchio F., Foschini L., Ghirlanda G., Maraschi L., Celotti A.
2009, MNRAS, in press arXiv:0909.0932

Time resolved spectral behaviour of bright BATSE precursors
Burlon D., Ghirlanda G., Ghisellini G., Greiner J., Celotti A.
2009, A&A, 505, 569 arXiv:0907.5203

Probing variability patterns of the Fe K line complex in bright nearby AGNs
De Marco B., Iwasawa K., Cappi M., Dadina M., Miniutti G., Celotti A., Tombesi F.
2009, A&A, 507, 159 arXiv:0907.1527

Fermi Discovery of Gamma-ray Emission from NGC 1275
Abdo A.A., et al. (The Fermi Collaboration)
2009, ApJ, 699, 31

Short versus long gamma-ray bursts: spectra, energetics, and luminosities
Ghirlanda G., Nava L., Ghisellini G., Celotti A., Firmani C.
2009, A&A, 496, 585 arXiv:0902.0983

An optical spectroscopic survey of the 3CR sample of radio galaxies with z<0.3. I. Presentation of the data
Buttiglione S., Capetti A., Celotti A., Axon D.J., Chiaberge M., Macchetto F., Sparks W.B.
2009, A&A, 495, 1033 arXiv:0901.1764

Fermi Observations of High-Energy Gamma-Ray Emission from GRB 080916C
Abdo A.A., Ackermanm M., Arimoto M., and 251 coauthors (The Fermi GRB and LAT Collaborations)
2009, Science, 323, 1688

A unifying view of Gamma-Ray Burst afterglows
Ghisellini G., Nardini M., Ghirlanda G., Celotti A.
2009, MNRAS, 393, 253 arXiv:0811.1038

TeV variability in blazars: how fast can it be?
Ghisellini G., Tavecchio F., Bodo G., Celotti A.
2009, MNRAS, 393, L16 arXiv:0810.5555

Gamma-ray polarization constraints on Planck scale violations of special relativity
Maccione L., Liberati S., Celotti A., Kirk J.G., Ubertini P.
2008, PRD, 78, 103003 PRD/v78/e103003

Precursors in Swift Gamma Ray Bursts with redshift
Burlon D., Ghirlanda G., Ghisellini G., Lazzati D., Nava L., Nardini M., Celotti A.
2008, ApJ, 685, L19 arXiv:0806.3076

Life after Death [Perspective]
Celotti A.
2008, Science, 321, 1164 full article

The power of blazar jets
Celotti A., Ghisellini G.
2008, MNRAS, 385, 283 arXiv:0711.4112

Rates of long Gamma-Ray Burst progenitors at high redshifts
Lapi A., Kawakatu N., Bosnjak Z., Celotti A., Bressan A., Granato G.L., Danese L.
2008, MNRAS, 386, 608 arXiv:0802.0787

Energetics - Spectral correlations vs the BATSE Gamma-Ray Bursts population
Bosnjak Z., Celotti A., Longo F., Barbiellini G.
2008, MNRAS, 384, 599 astro-ph/0502185

New constraints on Planck-scale Lorentz Violation in QED from the Crab Nebula
Maccione L., Liberati S., Celotti A., Kirk J.G.
2007, JCAP, 10, 13 arXiv:0707.2673

Re-born fireballs in Gamma-Ray Bursts
Ghisellini G., Celotti A., Ghirlanda G., Firmani C., Nava L.
2007, MNRAS, 382, L72 arXiv:0709.1945

On the nature of optical nuclei in FR I radio-galaxies from ACS/HST imaging polarimetry
Capetti A., Axon D.J., Chiaberge M., Sparks W.B., Macchetto D.F., Cracraft M., Celotti A.
2007, A&A, 471, 137 arXiv:0706.1944

Bulk Comptonization spectra in blazars
Celotti A., Ghisellini G., Fabian A.C.
2007, MNRAS, 375, 417 astro-ph/0611439

Using Radio Bubbles to Constrain the Matter Content of AGN Jets
Dunn R.J.H., Fabian A.C., Celotti A.
2006, MNRAS, 372, 1741 astro-ph/0608466

Radiative pressure feedback by a quasar in a galactic bulge
Fabian A.C., Celotti A., Erlund M.C.
2006, MNRAS, 373, L16 astro-ph/0608425

Multiwavelength observations of the BL Lacertae Object PKS 2155-304 with XMM-Newton
Zhang Y.-H., Bai J.M., Zhang S.N., Treves A., Maraschi L., Celotti A.
2006, ApJ, 651, 782 astro-ph/0607138

On the radio properties of the highest redshift quasars
Cirasuolo M., Magliocchetti M., Gentile G., Celotti A., Cristiani S., Danese L.
2006, MNRAS, 371, 29 astro-ph/0606297

Extended inverse-Compton emission from distant, powerful radio galaxies
Erlund M.C., Fabian A.C., Blundell K.M., Celotti A., Crawford C.S.
2006, MNRAS, 371, 695 astro-ph/0606238

GRB 990413: Insight into the thermal phase evolution
Bosnjak Z., Celotti A., Ghirlanda G.
2006, MNRAS, 370, L33 astro-ph/0604425

Discovery of the low-energy cutoff in a powerful radio galaxy
Blundell K.M., Fabian A.C., Crawford C.S., Erlund M.C., Celotti A.
2006, ApJ, 644, L13 astro-ph/0605391

Gamma-Ray Bursts associated with Supernovae: A systematic analysis of BATSE GRB candidates
Bosnjak Z., Celotti A., Ghirlanda G., Della Valle M., Pian E.
2006, A&A, 447, 121 astro-ph/0510058

XMM-Newton View of PKS 2155-304: Characterizing the X-Ray Variability Properties with EPIC-PN
Zhang Y. H., Treves A., Celotti A., Qin Y. P., Bai J. M.
2005, ApJ, 629, 686 astro-ph/0505160

The peak luminosity - peak energy correlation in GRBs
Ghirlanda G., Ghisellini G., Firmani C., Celotti A., Bosnjak Z.
2005, MNRAS, 360, L45 astro-ph/0502488

XMM observations of the high-redshift quasar RX J1028.6-0844: soft X-ray spectral flattening
Yuan W., Fabian A.C., Celotti A., McMahon R., Matsuoka M.
2005, MNRAS, 358, 432

Probing the nuclear obscuration in radio-galaxies with near infrared imaging
Marchesini D., Capetti A., Celotti A.
2005, A&A, 433, 841 astro-ph/0412388

Faint radio-loud quasars: clues on their evolution
Cirasuolo M., Magliocchetti M., Celotti A.
2005, MNRAS, 357, 1267 astro-ph/0412131

High frequency peakers: young radio sources or flaring blazars?
Tinti S., Dallacasa D., De Zotti G., Celotti A., Stanghellini C.
2005, A&A, 432, 31 astro-ph/0410663

The spectra of short Gamma-Ray Bursts
Ghirlanda G., Ghisellini G., Celotti A.
2004, A&A, 422, L55 astro-ph/0310861

Disk outflows and the accretion rate gap
Begelman M.C., Celotti A.
2004, MNRAS, 352, L45 astro-ph/0406607

Extended X-ray emission at high redshifts: radio galaxies versus clusters
Celotti A., Fabian A.C.
2004, MNRAS, 353, 523 astro-ph/0405622

XMM-Newton observations of GB B1428+4217: confirmation of intrinsic soft X-ray absorption
Worsley M.A., Fabian A.C., Celotti A., Iwasawa K.
2004, MNRAS, 350, L67 astro-ph/0403601

Internal shocks and the blazar sequence. Low and intermediate power BL Lac objects
Guetta D., Ghisellini G., Lazzati D., Celotti A.
2004, A&A, 421, 877 astro-ph/0402164

A transition in the accretion properties of radio-loud active nuclei
Marchesini D., Celotti A., Ferrarese L.
2004, MNRAS, 351, 733 astro-ph/0403272

Compton tails in long duration Gamma-Ray Bursts
Barbiellini G., Celotti A., Ghirlanda G., Longo F., Piro L., Tavani M.
2004, MNRAS, 350, L5

XMM-Newton confirmation of a warm absorber in the z=4.4 blazar PMN J0525-3343
Worsley M.A., Fabian A.C., Turner A.K., Celotti A., Iwasawa K.
2004, MNRAS, 350, 207 astro-ph/0310366

The effects of periodically gapped time series on cross-correlation lag determinations
Zhang Y.-H., Cagnoni I., Treves A., Celotti A., Maraschi L.
2004, ApJ, 605, 98 astro-ph/0401287

BeppoSAX observations of 1-Jy BL Lacertae objects. II.
Padovani P., Costamante L., Giommi P., Ghisellini G., Celotti A., Wolter A.
2004, MNRAS, 347, 1282 astro-ph/0311084

Extended X-ray emission in the high redshift quasar GB 1508+5714 at z=4.3
Yuan W., Fabian A.C., Celotti A., Jonker P.G.
2003, MNRAS, 346, L7 astro-ph/0309318

Is there a dichotomy in the radio loudness of quasars ?
Cirasuolo M., Celotti A., Magliocchetti M., Danese L.
2003, MNRAS, 346, 447 astro-ph/0306415

Extremely hard GRB spectra prune down the forest of emission models
Ghirlanda G., Celotti A., Ghisellini G.
2003, A&A, 406, 879 astro-ph/0210693

Evidence for anisotropy in the distribution of short-lived gamma-ray bursts
Magliocchetti M., Ghirlanda G., Celotti A.
2003, MNRAS, 343, 255 astro-ph/0302009

A multi-wavelength test of the FR I - BL Lac unifying model
Trussoni E., Capetti A., Celotti A., Chiaberge M., Feretti L.
2003, A&A, 403, 889 astro-ph/0304018

Clumps in large scale relativistic jets
Tavecchio F., Ghisellini G., Celotti A.
2003, A&A, 403, 83 astro-ph/0303161

The radio loud/radio quiet dichotomy: news from the 2dF QSO redshift survey
Cirasuolo M., Magliocchetti M., Celotti A., Danese L.
2003, MNRAS, 341, 993 astro-ph/0301526

The BL Lac objects OQ 530 and S5 0716+714. Simoultaneous observations in the X-rays, radio, optical and TeV bands
Tagliaferri G., Ravasio M., Ghisellini G., Giommi P. Massaro E., Nesci R., Tosti G., Aller M.F., Aller H.D., Celotti A., Maraschi L., Tavecchio F., Wolter A.
2003, A&A, 400, 487 astro-ph/0301117

A fireworks model for Gamma-Ray Bursts
Barbiellini G., Celotti A., Longo F.
2003, MNRAS, 339, L17 astro-ph/0112432

Chandra reveals X-rays along the radio axis in the quasar 3C 9 at z=2.012
Fabian A.C., Celotti A., Johnstone R.M.
2003, MNRAS, 338, L7 astro-ph/0204488

1WGA J1216.9+3347: Chandra finds an extremely steep Ultraluminous X-ray source
Cagnoni I., Turolla R., Treves A., Huang J.-S., Elvis M., Celotti A.
2003, ApJ, 582, 654 astro-ph/0209293

Events in the life of a cocoon surrounding a light, collapsar jet
Ramirez-Ruiz E., Celotti A., Rees M.J.
2002, MNRAS, 337, 1349 astro-ph/0205108

ROSAT blank field sources. I. Sample selection and archival data
Cagnoni I, Elvis M., Kim D.W., Nicastro F., Celotti A.
2002, ApJ, 579, 148 astro-ph/0207085

Understanding the nature of FR II optical nuclei: a new diagnostic plane of radio galaxies
Chiaberge M., Capetti A., Celotti A.
2002, A&A, 394, 791 astro-ph/0207654

Time resolved spectral analysis of bright gamma-ray bursts
Ghirlanda G., Celotti A., Ghisellini G.
2002, A&A, 393, 409 astro-ph/0206377

X-ray spectra produced by a hot plasma containing cold clouds
Malzac J., Celotti A.
2002, MNRAS, 335, 23 astro-ph/0204405

Spectral energy distribution of flat spectrum radio quasars observed with BeppoSAX
Tavecchio F., Maraschi G., Ghisellini G., Celotti A., Chiappetti L., Comastri A., Fossati G., Grandi P., Pian E., Tagliaferri G., Treves A., Sambruna R.M.
2002, ApJ, 575, 137 astro-ph/0207157

Four years monitoring of blazar PKS 2155-304 with BeppoSAX: probing the dynamics of the jet
Zhang Y.-H., Treves A., Celotti A., Chiappetti L., Ghisellini G., Fossati G., Maraschi L., Pian E., Tagliaferri G., Tavecchio F.
2002, ApJ, 572, 762 astro-ph/0202378

Low power BL Lacertae objects and the blazar sequence. Clues on the particle acceleration process
Ghisellini G., Celotti A., Costamante L.
2002, A&A, 386, 833 astro-ph/0202367

BL Lacertae: complex spectral variability and rapid synchrotron flare detected with BeppoSAX
Ravasio M., Tagliaferri G., Ghisellini G., Giommi P, Nesci R., Massaro E., Chiappetti L., Celotti A., Costamante L., Maraschi L., Tavecchio F., Tosti G., Treves A., Wolter A., Balonek T., Carini M., Kato T., Kurtanidze O., Montagni F., Nicolashvili M., Noble J., Nucciarelli G., Raiteri C.M., Sclavi S., Uemura M., Villata M.
2002, A&A, 383, 763 astro-ph/0201307

Spectral Survey of BL Lacs - new spectra and results
Beckmann V., Wolter A., Celotti A., Costamante L., Ghisellini G., Giommi P., Maccacaro T., Tagliaferri G.
2002, A&A, 383, 410 astro-ph/0112311

The HST survey of the B2 sample of radio-galaxies: optical nuclei and the FR I/BLLac unified scheme
Capetti A., Celotti A., Chiaberge M., de Ruiter H.R., Fanti R., Morganti R., Parma P.
2002, A&A, 383, 104 astro-ph/0112151

Spectral energy distribution of 3C 279 rivisited: BeppoSAX observations and variability models
Ballo L., Maraschi L., Tavecchio F., Celotti A., Fossati G., Ghisellini G., Pian E., Raiteri C., Tagliaferri G., Treves A., Urry C.M., Villata M.
2002, ApJ, 567, 50 astro-ph/0111499

The properties of the X-ray holes in the intracluster medium of the Perseus cluster
Fabian A.C., Celotti A., Blundell K.M., Kassim N.E., Perley R.A.
2002, MNRAS, 331, 369 astro-ph/0111418

Radio properties of radio sources at 1 mJy
Magliocchetti M., Celotti A., Danese L.
2002, MNRAS, 329, 377 astro-ph/0110251

The optical afterglow of GRB000911: evidence for an associated supernova?
Lazzati D., Covino S., Ghisellini G., Fugazza D., Campana S., Saracco P., Price P.A., Berger E., Kulkarni S., Ramirez-Ruiz E., Cimatti A., Della Valle M., di Serego Alighieri S., Celotti A., Haardt F., Israel G.L., Stella L.
2001, A&A, 378, 996 astro-ph/0109287

The dividing line between FR I and FR II radio-galaxies
Ghisellini G., Celotti A.
2001, A&A, 379, L1 astro-ph/0106570

Theoretical implications from the spectral evolution of Mkn 501 observed with BeppoSAX
Tavecchio F., Maraschi L., Chiappetti L., Celotti A., Fossati G., Ghisellini G., Palazzi E., Raiteri C.M., Sambruna R.M., Treves A., Urry C.M., Villata M., Aharonian F., Djannati-Atai A., Krawczynski H., Smith D.
2001, ApJ, 554, 710

Relativistic large scale jets and minimum power requirements
Ghisellini G., Celotti A.
2001, MNRAS, 327, 739 astro-ph/0103007

Internal shocks in the jets of radio-loud quasars
Spada M., Ghisellini G., Lazzati D., Celotti A.
2001, MNRAS, 325, 1559 astro-ph/0103424

1WGA J1226.9+3332: a high redshift cluster discovered by Chandra
Cagnoni I., Elvis M., Kim D.-W., Mazzotta P., Huang J.S., Celotti A.
2001, ApJ, 560, 86 astro-ph/0106066

The BL Lac heart of Centaurus A
Chiaberge M., Capetti A., Celotti A.
2001, MNRAS, 324, L33 astro-ph/0105159

An X-ray selected sample of radio-loud quasars
Wolter A., Celotti A.
2001, A&A, 371, 527 astro-ph/0103394

Extreme synchrotron BL Lac objects
Costamante L., Ghisellini G., Giommi P., Tagliaferri G., Celotti A., Chiaberge M., Fossati G., Maraschi L., Tavecchio F., Treves A., Wolter A.
2001, A&A, 371, 512 astro-ph/0103343

The 0.1-200 keV X-ray spectrum of the blazar PKS 2005-489 during an active state
Tagliaferri G., Ghisellini G., Giommi P., Celotti A., Chiaberge M., Chiappetti L., Glass I.S., Maraschi L., Tavecchio F., Treves A., Wolter A.
2001, A&A, 368, 38 astro-ph/0012503

The blazar GB 1428+4217: a warm absorber at z=4.72?
Fabian A.C., Celotti A., Iwasawa K., Ghisellini G.
2001, MNRAS, 324, 628 astro-ph/0101288

PMN O525-3343: soft X-ray spectral flattening in a blazar at z=4.4
Fabian A.C., Celotti A., Iwasawa K., McMahon R.G., Carilli C.L., Brandt W.N., Ghisellini G., Hook I.M.
2001, MNRAS, 323, 373 astro-ph/0011566

Large scale jets in AGN: multiwavelength mapping
Celotti A., Ghisellini G., Chiaberge M.
2001, MNRAS, 321, L1 astro-ph/0008021

Gamma-loud quasars: a view with BeppoSAX
Tavecchio F., Maraschi G., Ghisellini G., Celotti A., Chiappetti L., Comastri A., Fossati G., Grandi P., Pian E., Tagliaferri G., Treves A., Raiteri C.M., Sambruna R.M., Villata M.
2000, ApJ, 543, 535 astro-ph/0006443

Compton dragged gamma-ray bursts: the spectrum
Ghisellini G., Lazzati D., Celotti A., Rees M.J.
2000, MNRAS, 316, L45 astro-ph/0002049

Spectral energy distribution of FR I nuclei and the FR I/BL Lac unifying model
Capetti A., Trussoni, E., Celotti A., Feretti L., Chiaberge M.
2000, MNRAS, 318, 493 astro-ph/0007434

X-ray emission of Mkn 421: new clues from its spectral evolution. II. Spectral analysis and physical constraints
Fossati G., Celotti A., Chiaberge M., Zhang Y.-H., Chiappetti L., Ghisellini G., Maraschi L., Tavecchio F., Pian E., Treves A.
2000, ApJ, 541, 166 astro-ph/0005067

X-ray emission of Mkn 421: new clues from its spectral evolution. I. Temporal analysis
Fossati G., Celotti A., Chiaberge M., Zhang Y.-H., Chiappetti L., Ghisellini G., Maraschi L., Tavecchio F., Pian E., Treves A.
2000, ApJ, 541, 153 astro-ph/0005066

Does the unification of BL Lac and FR I radio galaxies require jet velocity structures?
Chiaberge M., Celotti A., Capetti A., Ghisellini G.
2000, A&A, 358, 104 astro-ph/0003197

ISO observations of the BL Lac object PKS 2155-304
Bertone E., Tagliaferri G., Ghisellini G., Treves A., Barr P., Celotti A., Chiaberge M., Maraschi L.
2000, A&A, 356, 1 astro-ph/0001507

The HST view of the FR I / FR II dichotomy
Chiaberge M., Capetti A., Celotti A.
2000, A&A, 355, 873 astro-ph/0002018

Constraints on the emission mechanisms of gamma-ray bursts
Ghisellini G., Celotti A., Lazzati D.
2000, MNRAS, 313, L1 astro-ph/9912461

The concave X-ray spectrum of the blazars ON 231: the signature of intermediate BL Lac objects
Tagliaferri G., Ghisellini G., Giommi P., Chiappetti L., Maraschi L., Celotti A., Chiaberge M., Fossati G., Massaro E., Maesano M., Montagni F., Nesci R., Nucciarelli G., Pian E., Raiteri C., Tavecchio F., Tosti G., Treves A., Villata M., Wolter A.
2000, A&A, 354, 431 astro-ph/9912055

Compton dragged gamma-ray bursts associated with supernovae
Lazzati D., Ghisellini G., Celotti A., Rees M.J.
2000, ApJ, 529, L17 astro-ph/9910191

Astrophysical evidence for the existence of black holes
Celotti A., Miller J.C., Sciama D.W.
1999, Classical and Quantum Gravity, Millenium Issue, 16, A3 astro-ph/9912186

Correlated variability of Mkn 421 at X-ray and TeV wavelenghts on timescales of hours
Maraschi L., Fossati G., Tavecchio F., Chiappetti L., Celotti A., Ghisellini G., Grandi P., Pian E., Tagliaferri G., Treves A., Breslin A.C., Buckley J.H., Carter-Lewis D.A., Catanese M., Cawley M.F., Fegan D.J., Fegan S., Finley J., Gaidos J., Hall T., Hillas A.M., Krennrich F., Lessard R.W., Masterson C., Moriarty P., Quinn J., Rose J., Samuelson F., Weekes T.C., Urry C.M., Takahashi T.
1999, ApJ, 526, L81

Rapid X-ray Variability of the BL Lacertae Object PKS 2155-304
Zhang Y.H., Celotti A., Treves A., Chiappetti L., Ghisellini G., Maraschi L., Pian E., Tagliaferri G., Tavecchio F., Urry C.M.
1999, ApJ, 527, 719 astro-ph/9907325

Constraints on the bulk Lorentz factor in the internal shock scenario for gamma-ray bursts
Lazzati D., Ghisellini G., Celotti A.
1999, MNRAS, 309, L13 astro-ph/9907070

The HST view of FR I radio galaxies: evidence for non-thermal nuclear sources
Chiaberge M., Capetti A., Celotti A.
1999, A&A, 349, 77 astro-ph/9907064

Variability of the extreme z=4.72 blazar, GB 1428+4217
Fabian A.C., Celotti A., Pooley G., Iwasawa K., Brandt W.N., McMahon R.G., Hoenig M.D.
1999, MNRAS, 308, L6 astro-ph/9907033

The blazar PKS 0528+134: new results from BeppoSAX observations
Ghisellini G., Tagliaferri G., Costamante L., Maraschi L., Celotti A., Fossati G., Bassani L., Cappi M., Frontera F., Pian E., Comastri A., Cavallone M., De Francesco G., Lanteri L., Raiteri C.M., Sobrito G., Villata M., Giarrusso S., Sacco B., Glass I.S., Grandi P., Molendi S., Padovani P., Palumbo G.G.C., Perola C., Salvati M., Treves A.
1999, A&A, 348, 63 astro-ph/9906165

Spectral evolution of PKS 2155-304 observed with BeppoSAX during an active gamma-ray phase
Chiappetti L., Maraschi L., Tavecchio F., Celotti A., Fossati G., Ghisellini G., Giommi P., Pian E., Tagliaferri G., Treves A., Urry C.M., Zhang Y.-H.
1999, ApJ, 521, 552 astro-ph/9903321

Magnetic flares in accretion disc coronae and the spectral states of black hole candidates: the case of GX 339-4
Di Matteo T., Celotti A., Fabian A.C.
1999, MNRAS, 304, 434 astro-ph/9805345

Quasi-thermal Comptonization in gamma-ray bursts
Ghisellini G., Celotti A.
1999, ApJ, 511, L93 astro-ph/9812079

Reprocessing of radiation by multi-phase gas in low luminosity accretion flows
Celotti A., Rees M.J.
1999, MNRAS, 305, L41 astro-ph/9807252

Testing the FR I/BL Lac unifying model with HST observations
Capetti A., Celotti A.
1999, MNRAS, 304, 434 astro-ph/9811407

The hidden X-ray Seyfert nucleus in 3C 273: BeppoSAX results
Haardt F., Fossati G., Grandi P., Celotti A., Pian E., Ghisellini G., Malizia A., Maraschi L., Paciesas W., Raiteri C.M., Tagliaferri G., Treves A., Urry C.M., Villata M., Wagner S.
1998, A&A, 340, 35 astro-ph/9806229

A unifying theoretical scheme for gamma-ray bright blazars
Ghisellini G., Celotti A., Fossati G., Maraschi L., Comastri A.
1998, MNRAS, 301, 451 astro-ph/9807317

A unifying view of the Spectral Energy Distributions of blazars
Fossati G., Maraschi L., Celotti A., Comastri A., Ghisellini G.
1998, MNRAS, 299, 433 astro-ph/9804103

Multiwavelenght observations of a dramatic high energy flare in the blazar 3C 279
Wehrle A.E., Pian E., Urry C.M., Maraschi L., Ghisellini G., Hartman R.C., Madejski G.M., Makino F., Marscher A.P., McHardy I.M., Wagner S.J.,Webb J.R., Aldering G.S., Aller M.F., Aller H.D., Backman D.E., Balonek T.J., Boltwood P., Bonnell J., Caplinger J., Celotti A., Collmar W., Dalton J., Drucker A., Falomo R., Fichtel C.E., Freudling W., Gear W.K., Gonzalez-Perez N., Hall P., Inoue H., Johnson W.N., Kazanas D., Kidger M.R., Kii T., Kollgaard R.I., Kondo Y., Kurfess J., Lawson A.J., Lin Y.C., McCollum B., McNaron-Brown K., Nair A.D., Penton S., Pesce J.E., Pohl M., Raiteri C.M., Renda M., Robson E.I., Sambruna R.M., Schirmer A.F., Shrades C., Sikora M., Sillanpaa A., Smith P.S., Stevens J.A., Stocke J., Takalo L.O., Terasranta H., Thompson D.J., Thompson R., Tornikoski M., Tosti G., Turcotte P., Treves A., Unwin S.C., Valtaoja E., Villata M., Xu W., Zook A.
1998, ApJ, 497, 178 astro-ph/9711243

The ASCA spectrum of the z=4.72 blazar, GB 1428+4217
Fabian A.C., Iwasawa K., Celotti A., Brandt W.N., McMahon R.G., Hook I.M.
1998, MNRAS, 295, L25 astro-ph/9801288

Limits from rapid TeV variability of Mrk 421
Celotti A., Fabian A.C., Rees M.J.
1998, MNRAS, 293, 239 astro-ph/9707131

Thermal material in relativistic jets
Celotti A., Kuncic Z., Rees M.J., Wardle J.F.C.
1998, MNRAS, 293, 288 astro-ph/9707132

A multi-wavelength study of the Seyfert 1 galaxy MCG-6-30-15
Reynolds C.S., Ward M.J., Fabian A.C., Celotti A.
1997, MNRAS, 291, 403 astro-ph/9707160

Cyclo-synchrotron emission from magnetically dominated active regions
Di Matteo T., Celotti A., Fabian A.C.
1997, MNRAS, 291, 805 astro-ph/9707130

Unifying models for X-ray selected and radio selected BL Lac objects
Fossati G., Celotti A., Ghisellini G., Maraschi L.
1997, MNRAS, 289, 136 astro-ph/9704113

Multiwavelength monitoring of the BL Lac object PKS 2155-304 in May 1994. II. The IUE campaign
Pian E., Urry M.C., Treves A., Maraschi L., Penton S., Shull J.M., Pesce J.E., Grandi P., Kii T., Kollgaard R.I., Madejski G., Marshall H., Wamsteker W., Celotti A., Courvoisier T.J.-L., Falomo R., Fink H.H., George I.M., Ghisellini G.
1997, ApJ, 486, 784 astro-ph/9706300

Multiwavelength monitoring of the BL Lac object PKS 2155-304 in May 1994. III. Probing the inner jet through multiwavelength correlations
Urry C.M., Treves A., Maraschi L., Marshall H., Kii T., Madejski G., Penton S., Pesce J.E., Pian E., Celotti A., Fujimoto R., Makino F., Otani C., Sambruna R.M., Sasaki K., Shull J.M., Smith P., Takahashi T., Tashiro M.
1997, ApJ, 486, 799 astro-ph/9704194

Jets and accretion processes in Active Galactic Nuclei: further clues
Celotti A., Padovani P., Ghisellini G.
1997, MNRAS, 286, 415 astro-ph/9611111

Dense, thin clouds and reprocessed radiation in the central regions of Active Galactic Nuclei
Kuncic Z., Celotti A., Rees M.J.
1997, MNRAS, 284, 717 astro-ph/9608163

The matter content of the jet in M87: evidence for an electron-positron jet
Reynolds C.S., Fabian A.C., Celotti A., Rees M.J.
1996, MNRAS, 283, 873 astro-ph/9603140

Pair dominated Active Galactic Nuclei and the origin of the X-ray background
Celotti A., Fabian A.C., Ghisellini G., Madau P.
1995, MNRAS, 277, 1169

Joint ROSAT - Compton GRO observations of the X-ray bright Seyfert galaxy IC 4329A
Madejski G.M., Zdziarski A.A., Turner T.J., Done C., Mushotzky R.F., Hartman R.C., Gehrels N., Connors A., Fabian A.C., Nandra K., Celotti A., Rees M.J., Johnson W.N, Grove E., Starr C.H.
1995, ApJ, 438, 672

Multi-wavelength monitoring of the BL Lac Object PKS 2155-304. IV. Multi-wavelength analysis
Edelson R., Krolik J., Madejski G., Maraschi L., Pike G., Urry C.M., Brinkmann W., Courvoisier T.J.-L., Ellithorpe J., Horne K., Treves A., Wagner S., Wamstecker W., Warwick R., Aller H.D., Aller M.F., Ashley M., Blecha A., Bouchet P., Bratschi P., Bregman J.N., Carini M., Celotti A., Donahue M., Feigelson E., Filippenko A.V., Fink H., George I., Glass I., Heidt J., Hewitt J., Hughes P., Kollgaard R., Kondo Y., Koraktar A., Leighly K., Marscher A., Matheson T., Martin P.G., Miller J.C., Noble H.R., O'Brien P., Pian E., Reichert G., Saken J., Shull J.M., Sitko M., Smith P., Sun W.-H., Tagliaferri G.
1994, ApJ, 438, 120

The X-ray spectrum of the highly-polarized quasar PKS 1502+106
George I.M., Nandra K., Turner T.J., Celotti A.
1994, ApJ, 436, L59

Physical processes in the X-ray/gamma-ray source of IC 4329A
Zdziarski A.A., Fabian A.C., Nandra K., Celotti A., Rees M.J., Done C., Coppi P.S., Madejski G.M.
1994, MNRAS, 269, L55

Polarization properties of synchrotron self-Compton radiation
Celotti A., Matt G.
1994, MNRAS, 268, 451

OSSE observations of the bright Seyfert 1 galaxy IC 4329A
Fabian A.C., Nandra K., Celotti A., Rees M.J., Grove J.E., Johnson W.N.
1993, ApJ, 416, L57 (ERRATUM: 1994, ApJ, 421, L95

The kinetic power and luminosity of parsec-scale radio jets; an argument for heavy jets
Celotti A., Fabian A.C.
1993, MNRAS, 264, 228

Unified model for X-ray and radio selected BL Lac objects
Celotti A., Maraschi L., Ghisellini G., Caccianiga A., Maccacaro T.
1993, ApJ, 416, 118

Radio-loud AGN and the extragalactic gamma-ray background
Padovani P., Ghisellini G., Fabian A.C., Celotti A.
1993, MNRAS, 260, L21

Relativistic bulk motion in Active Galactic Nuclei
Ghisellini G., Padovani P., Celotti A., Maraschi L.
1993, ApJ, 407, 65

A jet model for the gamma-ray emission of 3C 279
Maraschi L., Ghisellini G., Celotti A.
1992, ApJ, 397, L5

The role of electron-positron pairs in parsec-scale radio jets
Ghisellini G., Celotti A., George I.M., Fabian A.C.
1992, MNRAS, 258, 776

Dense thin clouds in the central regions of Active Galactic Nuclei
Celotti A., Fabian A.C., Rees, M.J.
1992, MNRAS, 255, 419

On the magnetic energy density in the compact region of Active Galactic Nuclei
Celotti A., Ghisellini G., Fabian A.C.
1991, MNRAS, 251, 529

Short term X-ray variability of the BL Lac object PKS 2155-304: power spectrum and cross-correlation analysis
Tagliaferri G., Stella L., Maraschi L., Treves A., Celotti A.
1991, ApJ, 380 78

A model for the spectral variability of BL Lac objects at high frequencies
Celotti A., Maraschi L., Treves A.
1991, ApJ, 377, 403