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  1. ATel 2241: VLA observations of the bright transient PTF09cnd
  2. ATel 2240: Spectroscopic confirmation of the nova close to the core of M 31 (ATel #22
  3. ATel 2239: Spectroscopic confirmation of nova M31N 2009-10a in M 31
  4. ATel 2238: SuperAGILE detection of a type I X-ray burst from a position consistent w
  5. ATel 2237: RXTE and Swift: IGR J17511-3057 fading, XTE J1751-305 detected
  6. ATel 2236: Swift/XRT detection of GRS 1741.9-2853 in outburst
  7. ATel 2235: INTEGRAL sees transient activity in the Galactic Bulge: XTE J1751-305 and
  8. ATel 2234: New optical nova candidate in M 31
  9. ATel 2233: Confirmation of the NIR counterpart to IGR J17511-3057
  10. ATel 2232: Radio upper limits for the accreting millisecond X-ray pulsar IGR J17511-3
  11. ATel 2242: AGILE detection of the gamma-ray blazar PKS 1830-211
  12. ATel 2243: Fermi LAT detection of a GeV flare from blazar 4C 14.23
  13. ATel 2244: GTC optical observations of SGR 0418+5729
  14. ATel 2245: Increased X-ray Activities of the Symbiotic Star, CH Cygni
  15. ATel 2246: An optical flare of 4C 14.23 observed with the KANATA telescope
  16. ATel 2247: Broad-band Photometry of the Potentially Hazardous Asteroid 2009 KC3.
  17. ATel 2248: Optical Spectroscopy of the M31 nova M31N-2009-10b
  18. ATel 2249: Discovery of supernovae in the PS1 sky survey
  19. ATel 2250: Orbital Modulation and Long Term Spin-up Rate of SWIFT J1626.6-5156
  20. ATel 2253: Swift XRT/UVOT follow-up of blazar 4C+14.23 after a gamma-ray flare
  21. ATel 2252: Swift/XRT spectrum of the accreting X-ray pulsar IGR J01572-7259
  22. ATel 2251: Spectral evolution of M31N 2009-10b
  23. ATel 2256: Fermi LAT and GASP detections of a concurrent GeV and optical flare from t
  24. ATel 2255: 2 New Supernova Discoveries/Classifications
  25. ATel 2254: Swift and CBA Observations of TT Ari on 2009 October 16
  26. ATel 2257: Swift observation of the SFXT IGR J11215-5952 in outburst
  27. ATel 2258: XTE J1752-223: a new RXTE and Swift detected X-ray transient in the galact
  28. ATel 2259: XTE J1752-223: Flux increasing in a new RXTE and Swift X-ray transient in
  29. ATel 2261: Additional Observations of XTE J1752-223
  30. ATel 2260: VERITAS discovery of a new VHE Gamma-ray Source, VER J0521+211
  31. ATel 2262: SWIFT J004159.3+410539 - A new X-ray transient in M31
  32. ATel 2263: The Optical Counterpart to XTE J1752-223
  33. ATel 2265: Increasing X-ray Intensity of XTE J1752-223
  34. ATel 2264: 4U 1608-52 is back to quiescence after its 2007-2009 outburst
  35. ATel 2267: Swift detection of a bright X-ray flare from OJ 287
  36. ATel 2266: Optical Transients from CRTS
  37. ATel 2268: XTE J1752-223: Optical spectroscopy and infrared counterpart detection
  38. ATel 2269: XTE J1752-223: RXTE PCA Observation shows black hole candidate
  39. ATel 2270: GX 339-4 Approaching Quiescence ?
  40. ATel 2271: MAXI/GSC detection of an X-ray flare in the direction of 4U 2206+54
  41. ATel 2272: Discovery of High-Energy Gamma-Ray Emission from the BL Lac Object RBS 041
  42. ATel 2273: Erratum: MAXI/GSC detection of an X-ray flare in the direction of 4U 2206+
  43. ATel 2274: Swift Ultraviolet Detections of five Novae in M31
  44. ATel 2276: Swift/BAT confirms the outburst from 2S 1417-624
  45. ATel 2275: 2S 1417-624 in Outburst
  46. ATel 2277: Renewed activity of A0535+26 detected by MAXI/GSC
  47. ATel 2277: Renewed activity of A0535+26 detected by MAXI/GSC
  48. ATel 2278: Radio detection of XTE J1752-223 with the ATCA
  49. ATel 2280: GBM detection of XTE J1752-223 to above 100 keV
  50. ATel 2279: Swift/BAT observes a new outburst from the SFXT SAX J1818.6-1703
  51. ATel 2281: A recent Swift/XRT observation of GX 339-4 during its faint optical flux
  52. ATel 2282: Outburst of Cataclysmic Variable 1RXS J231935.0+364705
  53. ATel 2283: Long-slit CCD spectroscopy of planetary radar targets 1999 AP10, 2000 TO64
  54. ATel 2284: Swift/BAT reports a flaring state of PKS 0405-385
  55. ATel 2285: New optical nova candidate in M 31
  56. ATel 2286: M31N 1997-11k - a very fast recurrent nova in M31 or a foreground CV?
  57. ATel 2288: Aql X-1 back in outburst: multi-wavelength observations
  58. ATel 2287: Chandra detection of X-ray transients: a new outburst of RX J0043.2+4127 i
  59. ATel 2289: Broad-band Photometry of the Binary Potentially Hazardous Asteroid 2003 YT
  60. ATel 2290: Spectroscopic Classification of PTF09gfq/M31N1997-11k/M31N2001-12b
  61. ATel 2291: Spectroscopic Classification of SNe 2009kq and 2009kr
  62. ATel 2292: Swift/BAT reports new flaring activity from Mrk 421
  63. ATel 2293: H.E.S.S. and Fermi-LAT discovery of VHE and HE emission from blazar 1ES 04
  64. ATel 2294: Chandra detection of outburst from M31 binary CXOM31 J004321.1+411751
  65. ATel 2295: Swift/XRT follow-up observation confirms the flaring activity of Mrk 421
  66. ATel 2296: Aquila X-1 in weak outburst
  67. ATel 2297: MAXI/GSC detection of an outburst from GX 304-1
  68. ATel 2299: INTEGRAL detects Aql X-1 in outburst in a hard state
  69. ATel 2298: INTEGRAL/JEM-X sees a flare from IGR J19112+1358 and gives a refined posit
  70. ATel 2300: Swift and RXTE report the detection of a new galactic transient source Sw
  71. ATel 2301: Discovery of VHE Gamma-Ray Emission from the Fermi-LAT Source 1ES 0502+67
  72. ATel 2302: Aql X-1 transition towards the soft (banana) state accompanied by radio/NI
  73. ATel 2303: Aquila X-1 optical rise
  74. ATel 2304: New optical nova candidate in M 31
  75. ATel 2306: Fermi LAT detection of a GeV flare from GB6 B1310+4844
  76. ATel 2305: New X-ray Outburst in X1744-361 (A1744-36)
  77. ATel 2307: Discovery of a likely FU-Ori-type system
  78. ATel 2308: New optical nova candidate in M 31
  79. ATel 2309: VERITAS reports a High Gamma-ray Flux from VER J0521+211
  80. ATel 2310: AGILE confirms high gamma-ray state of GB6 B1310+4844
  81. ATel 2311: Infrared flaring of the gamma-ray source GB6 B1310+4844
  82. ATel 2312: Probable progenitor for SN 2009kr in NGC 1832
  83. ATel 2313: New Outburst of the Transient Be/X-ray Pulsar GRO J1008-57
  84. ATel 2314: Optical flaring in the blazar OJ 287
  85. ATel 2315: Characterization of CRTS SNe with Gemini
  86. ATel 2316: Fermi LAT observation of ongoing GeV activity from spectrally hard blazar
  87. ATel 2317: EVN detection of Aql X-1 in outburst
  88. ATel 2318: The First Optical Transient Discoveries from MLS
  89. ATel 2319: Swift/BAT detects renewed activity from V0332+53
  90. ATel 2320: An optical flare of GB6 1310+4844 observed with the Kanata telescope
  91. ATel 2322: AGILE detects intense and prolonged gamma-ray activity from the FSRQ 3C 45
  92. ATel 2321: Short X-ray Transient Detection by MAXI/GSC
  93. ATel 2323: Planetary radar targets 1999 AP10, 2000 TO64, 2000 UJ1, and 2000 XK44: Fou
  94. ATel 2324: Rapid Brightening of A0535+26 Observed by Fermi GBM
  95. ATel 2325: GASP detection of a fast optical brightening of the blazar 3C 454.3
  96. ATel 2326: AGILE detects an extraordinary gamma-ray activity from the FSRQ 3C 454.3
  97. ATel 2328: Fermi LAT detection of an extraordinary GeV outburst from 3C 454.3
  98. ATel 2327: Optical observations of KT Eri = Nova Eridani 2009
  99. ATel 2329: Swift/XRT observations of a huge flare from 3C 454.3
  100. ATel 2330: Swift/BAT detects flaring activity from 3C 454.3
  101. ATel 2331: The pre-Nova Lightcurve of KT Eri (Nova Eridani 2009)
  102. ATel 2332: Strong optical and IR brightening in the blazar 3C 454.3
  103. ATel 2334: Two AM CVn systems in outburst - V406 Hya and SDSS J0129+3842
  104. ATel 2333: Optical behavior of gamma-ray bright FSRQ 3C 454.3
  105. ATel 2335: VLA Radio observations of Type IIn supernova SN 2009kn
  106. ATel 2336: 1A 0535+262 is now three times as bright as the Crab
  107. ATel 2337: Giant outburst of A0535+26 monitored with RXTE
  108. ATel 2338: A pre-outburst spectrum of KT Eri from the Digitized First Byurakan Survey
  109. ATel 2340: VLA Radio observations of Type IIn supernova SN 2009mb
  110. ATel 2339: VLA Radio observations of Type IIn supernova SN 2009ma
  111. ATel 2342: Strong Millimeter Band Flaring of S5 0716+71 (J1721+713)
  112. ATel 2341: MAXI/GSC detected an increasing soft X-ray component of Swift J1753.5-0127
  113. ATel 2343: Swift XRT observation of 1A 0535+262
  114. ATel 2344: INTEGRAL/IBIS observation of the blazar 3C 454.3 during the decaying phase
  115. ATel 2346: Quasi-Periodic Oscillations detected in the hard-X ray flux of A 0535+26
  116. ATel 2345: Photopolarimetry of Blazar 3C454.3 from MIRO
  117. ATel 2347: Detection of high and variable Optical Polarization in Blazar S5 0716+71 f
  118. ATel 2348: AGILE detection of a gamma-ray flare from the blazar PKS 1222+216
  119. ATel 2350: H.E.S.S. discovers VHE emission from the Fermi LAT source PKS 0447-439
  120. ATel 2349: Fermi LAT confirmation of a strong GeV flare from 4C 21.35 (PKS 1222+21)
  121. ATel 2351: VLA upper limit on Type IIn supernova SN 2009au
  122. ATel 2353: Blazar S5 0716+714 is in the Optical Outburst State?
  123. ATel 2352: Strong Optical Flaring after Super Gamma-Ray Flare detected in the Blazar
  124. ATel 2354: Swift-XRT detection of x-ray pulsations from IGR J18173-2509 and SWIFT J21
  125. ATel 2355: A Swift/XRT follow-up observation of the INTEGRAL source IGR J14488-5942
  126. ATel 2357: VLA upper limit on Type IIn supernova SN 2009cw
  127. ATel 2356: CXOM31 J004253.1+411422 - a very bright new X-ray transient in M 31 disco
  128. ATel 2358: VLA upper limit on Type IIn supernova SN 2009eo
  129. ATel 2359: Supernovae from CRTS
  130. ATel 2360: MAXI/GSC detection of an X-ray outburst from NGC6440
  131. ATel 2361: AGILE Detection of AGL J1023-3738, a new high-Galactic latitude unidentifi
  132. ATel 2362: VLA radio detection of Type IIn supernova SN 2008iy
  133. ATel 2363: MAXI/GSC detection of an increase in X-ray intensity from 4U 1630-47
  134. ATel 2364: Renewed Activity from H 1743-322 detected by MAXI/GSC
  135. ATel 2365: RXTE observes further brightening of 4U 1630-47
  136. ATel 2366: Fermi LAT detection of a GeV flare from PKS 0426-380
  137. ATel 2367: VLA second epoch observations of the bright transient PTF09cnd
  138. ATel 2368: MAXI/GSC detection of a bright X-ray flare from Mkn 421
  139. ATel 2369: V0332+53: Renewed activity detected by MAXI/GSC
  140. ATel 2370: ATCA non detection of 4U 1630-47 in outburst
  141. ATel 2372: 2007 MK13: A Highly Elongated C-type Potentially Hazardous Asteroid.
  142. ATel 2371: 217807 (2000 XK44): Broad-band photometry of a slowly rotating near-Earth
  143. ATel 2374: Hard X-Ray flaring activity of 3C 111 detected by Swift/BAT
  144. ATel 2373: Fermi LAT detection of a GeV flare from blazar PKS 2155-83
  145. ATel 2375: Swift/BAT Detects an Outburst from XTE J1901+014
  146. ATel 2376: AGILE detection of a gamma-ray flare from the blazar 3C 273
  147. ATel 2377: Radio follow-up of the ongoing transient event in NGC 6440
  148. ATel 2378: MAXI/GSC detects a spectral state transition in H 1743-322
  149. ATel 2379: Spectroscopic Classification of PTF10bt/SN2010B
  150. ATel 2380: MAXI/GSC detection of an X-ray activity from GX 339-4
  151. ATel 2381: Recent light maximum of BQ Cam
  152. ATel 2382: REM observations confirm a rapid outburst of the blazar 3C 273
  153. ATel 2383: New optical nova candidate in M 31
  154. ATel 2384: RXTE observes hard state activity from GX 339-4
  155. ATel 2385: AGILE detection of enhanced gamma-ray emission from the blazar PKS 1510-08
  156. ATel 2386: Fermi LAT detection of a GeV flare from blazar S5 1803+784
  157. ATel 2387: Spectral state transition in the X-ray transient XTE J1752-223
  158. ATel 2388: MDM classification of CRTS supernova discoveries
  159. ATel 2392: Emergence of a Bright and Highly Variable Super-soft Source Phase in Nova
  160. ATel 2391: XTE J1752-223 seen by RXTE in Black Hole Intermediate State
  161. ATel 2390: Retraction of ATel #2374 (flaring activity from 3C 111)
  162. ATel 2389: Swift XRT Detection of Supernova 2009mk in X-Rays
  163. ATel 2393: Fermi LAT detection of a GeV flare from OX 169 (S3 2141+17)
  164. ATel 2394: Recent optical burst of the symbiotic star CH Cygni
  165. ATel 2395: Rapid optical and radio brightening of the blazar PKS 0420-014
  166. ATel 2396: MAXI/GSC observes a rapid spectral softening in XTE J1753-223
  167. ATel 2398: Additional Supernova Discoveries from the Pan-STARRS1 Medium Deep Survey
  168. ATel 2397: Supernova Discoveries from the Pan-STARRS1 Medium Deep Survey
  169. ATel 2399: MAXI/GSC detection of an increase in X-ray intensity from 4U 1323-619
  170. ATel 2400: ATCA detection of increased radio emission from XTE J1752-223
  171. ATel 2401: MAXI/GSC detection of a flare from HR 1099 (V711 Tau)
  172. ATel 2402: Fermi LAT detection of increased gamma-ray activity of two blazars PKS 042
  173. ATel 2403: AGILE detection of AGL J2206+6203, a new unidentified gamma-ray source
  174. ATel 2404: MAXI/GSC observes possible transition to the high-soft state in Cyg X-3
  175. ATel 2405: INTEGRAL upper limit on AGL J2206+6203
  176. ATel 2406: Late time Spitzer detection of the 2008 optical transient in NGC 300
  177. ATel 2407: Detection of pulsations and identification of SAX J1748.9-2021 as the X-r
  178. ATel 2408: Fermi LAT detection of a GeV flare from blazar PMN J2345-1555
  179. ATel 2409: Nova Eri 2009 (prediscovery images)
  180. ATel 2411: 2010 Outburst of Recurrent Nova U Sco - Optical Spectroscopy
  181. ATel 2410: RXTE shows spectral transition during decay in H 1743-322
  182. ATel 2412: INTEGRAL observations of U Sco
  183. ATel 2413: Fermi LAT detection of a GeV flare from PKS 0402-362
  184. ATel 2414: Fermi LAT detection of a flaring, new GeV source near the Galactic plane:
  185. ATel 2417: Massive outburst of 29P/Schwassmann-Wachmann 1
  186. ATel 2416: AGILE confirmation of the new gamma-ray flaring source J0109+6134 near the
  187. ATel 2415: Short X-ray Transient detected by MAXI/GSC
  188. ATel 2420: Swift/XRT Follow-up of the Fermi-LAT Galactic Plane Transient J0109+6134
  189. ATel 2419: Detection of U Sco in X-rays
  190. ATel 2418: A Chandra High-Resolution X-ray spectrum of KT Eri
  191. ATel 2421: The radio and optical counterpart of the new Fermi LAT flaring source J01
  192. ATel 2422: Candidate Progenitor of the Type Ib SN 2010O in NGC 3690
  193. ATel 2423: Large amplitude variability and detection of a 35 sec modulation of the so
  194. ATel 2424: Swift Pointed Observations of XTE J1752-223
  195. ATel 2425: MAXI/GSC detects an increase in X-ray flux from 4U 1711-34
  196. ATel 2426: Discovery of kilohertz QPOs in RXTE observations of SAX J1748.9-2021.
  197. ATel 2427: MAXI/GSC detects X-ray rebrightening of the recurrent transient V0332+53
  198. ATel 2428: Radio follow-up of the Fermi-LAT Galactic Plane Transient J0109+6134 with
  199. ATel 2429: The optical counterpart of the new Fermi LAT flaring source J0109+6134 nea
  200. ATel 2430: Emergence of the Supersoft X-ray Phase of U Sco
  201. ATel 2431: MAGIC observes increased VHE gamma ray flux from M87
  202. ATel 2432: MERLIN radio observations of two recent supernovae in Arp299: SN2010O & SN
  203. ATel 2434: Radio detections of KT Eri
  204. ATel 2433: The former RATAN-600 radio telescope data of J0109+6134
  205. ATel 2436: Detection of an optical flare from PKS 1222+216 (4C 21.35)
  206. ATel 2435: M31N 2010-01d: a new optical nova candidate close to the M 31 center detec
  207. ATel 2437: EVN observations of the radio galaxy M87 following a TeV flare
  208. ATel 2438: Detection of Probable Jet Component to XTE J1752-233 with the e-EVN
  209. ATel 2439: Correction: Detection of Probable Jet Component to XTE J1752-233 with the
  210. ATel 2440: Fermi LAT detection of a GeV flare from PKS 0244-47
  211. ATel 2441: Improved X-ray position for unidentified/unclassified INTEGRAL sources in
  212. ATel 2442: Broad UV and probable X-ray eclipses in nova U Sco
  213. ATel 2444: MAXI/GSC detection of a bright X-ray flare from Mrk 421
  214. ATel 2443: VERITAS Reports Markarian 421 in a High Flaring State
  215. ATel 2445: XMM-Newton Observation of IGR J18538-0102 and an Optical/IR Candidate
  216. ATel 2446: A large spin-up glitch detected in the 70.5 ms pulsar AX J1838.0-0655 asso
  217. ATel 2449: Broadband Colors and Rotation Lightcurves of the Potentially Hazardous Ast
  218. ATel 2448: Pan-STARRS1 Medium Deep Survey Discovery of a SN Ia at z=0.031
  219. ATel 2447: Recent Supernovae from CRTS
  220. ATel 2450: Radio Non-Detection of the Type IIb Supernova 2009mk in ESO 293-34
  221. ATel 2451: Chandra observation of U Scorpii
  222. ATel 2452: Recurrent Nova U Sco Shows Deep Optical Eclipses During Plateau Phase
  223. ATel 2453: A New Supernova Discovery/Classification
  224. ATel 2454: AGILE detects enhanced gamma-ray emission from the blazar PKS 0537-441
  225. ATel 2455: INTEGRAL observes an increasing Hard X-ray flux of GX 339-4
  226. ATel 2456: Fermi LAT detection of GeV flare in high redshift blazar 4C 38.41
  227. ATel 2458: Correction to ATEL #2440: Fermi LAT detection of a GeV flare from PKS 0244
  228. ATel 2457: IGR J13168-7157 is a Seyfert 1 active galactic nucleus
  229. ATel 2459: Optical Observations of GX 339-4 in Outburst with the Faulkes Telescope So
  230. ATel 2460: WSRT observations of the field of the gamma-ray transient J0109+6134
  231. ATel 2461: SuperAGILE detection of an X-ray burst from 4U 1608-522
  232. ATel 2462: MAXI/GSC detection of brightening of a transient LMXB 4U 1608-522
  233. ATel 2463: Swift observations of a bright outburst of the SFXT IGR J17544-2619
  234. ATel 2464: INTEGRAL observation of renewed activity from 4U 1608-522
  235. ATel 2466: The Dwarf Nova GK Per has entered outburst
  236. ATel 2465: INTEGRAL reports renewed activity from KS 1741-293
  237. ATel 2467: Spectral transition of 4U 1608-522 during the undergoing 2010 outburst
  238. ATel 2468: Discovery of a Supernova Candidate
  239. ATel 2469: Variable strong X-ray emission lines in U Sco
  240. ATel 2471: Follow-up of PTF10bzf with Swift
  241. ATel 2470: Palomar Transient Factory discovers a young, broad-line Type Ic supernova
  242. ATel 2472: Allen Telescope Array Observations of PTF10bzf
  243. ATel 2473: CARMA observations of PTF 10bzf
  244. ATel 2474: Optical ID of CXOM31 J004253.1+411422, a bright Black Hole X-ray Nova in
  245. ATel 2475: Near-IR observations of the Supergiant Fast X-ray Transient (SFXT) IGR J1
  246. ATel 2477: Recurrent Nova U Sco Has Sharp Decline in X-ray/UV/Optical/IR
  247. ATel 2476: X-ray Transient detected by MAXI/GSC
  248. ATel 2479: WSRT Radio Observations of PTF10bzf
  249. ATel 2478: Swift XRT Detection of Supernova 2008M in X-Rays
  250. ATel 2480: ROTSE3 J133033.0-313427 is a Type Ia Supernova